19510880

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{619}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 46403280

約数和(自身を除く): 26892400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 619, 788, 985, 1238, 1576, 1970, 2476, 3095, 3152, 3940, 4952, 6190, 6304, 7880, 9904, 12380, 15760, 19808, 24760, 31520, 49520, 99040, 121943, 243886, 487772, 609715, 975544, 1219430, 1951088, 2438860, 3902176, 4877720, 9755440, 19510880]

約数ペア:

[(1, 19510880), (2, 9755440), (4, 4877720), (5, 3902176), (8, 2438860), (10, 1951088), (16, 1219430), (20, 975544), (32, 609715), (40, 487772), (80, 243886), (160, 121943), (197, 99040), (394, 49520), (619, 31520), (788, 24760), (985, 19808), (1238, 15760), (1576, 12380), (1970, 9904), (2476, 7880), (3095, 6304), (3152, 6190), (3940, 4952)]